An ogive is a curved shape, figure, or feature.

Applied physical science and engineering

In ballistics or aerodynamics, an ogive is a pointed, curved surface used to form the approximately streamlined nose of a bullet, shell, missile or aircraft. Ballistics (gr. ... This article is about the branch of Physics. ... In fluid dynamics, a streamline is a line which is everywhere tangent to the velocity of the flow. ... .357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ... A shell is a projectile, which, as opposed to a bullet, contains an explosive or other filling, though modern usage includes large solid projectiles previously termed shot (AP, APCR, APCNR, APDS, APFSDS and Proof shot). ... Exocet missile in flight A missile (see also pronunciation differences) is a projectile propelled as a weapon at a target. ... An Airbus A380, currently the worlds largest passenger airliner An aircraft is any vehicle or craft capable of atmospheric flight. ...

The traditional or secant ogive is a surface of revolution of the same curve that forms a Gothic arch; that is, a circular arc, of greater radius than the cylindrical section ("shank"), is drawn from the edge of the shank until it intercepts the axis. Secant is a term in mathematics. ... The parabola y=x2 rotated about the z-axis A surface of revolution is a surface created by rotating a curve lying on some plane (the generatrix) around a straight line (the axis of rotation) that lies on the same plane. ... In Euclidean geometry, an arc is a closed segment of a differentiable curve in the two-dimensional plane; for example, a circular arc is a segment of a circle. ... Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization and accounting) protocol for applications such as network access or IP mobility. ... A right circular cylinder An elliptic cylinder In mathematics, a cylinder is a quadric, i. ...

If this arc is drawn so that it meets the shank at zero angle (that is, the distance of the centre of the arc from the axis, plus the radius of the shank, equals the radius of the arc), then it is called a tangential or spitzer ogive. This is a very common ogive for high velocity (supersonic) rifle bullets. In mathematics, the word tangent has two distinct but etymologically-related meanings: one in geometry and one in trigonometry. ... It has been suggested that hypersonic be merged into this article or section. ... It has been suggested that Break action be merged into this article or section. ... .357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ...

A secant ogive of sharpness E = 120 / 100 = 1.2

The sharpness of this ogive is expressed by the ratio of its radius to the diameter of the cylinder; a value of one half being a hemispherical dome, and larger values being progressively more pointed. Values of 4 to 10 are commonly used in rifles, with 6 being the most common. Image File history File links Secant_ogive. ... A sphere is a perfectly symmetrical geometrical object. ...

Another common ogive for bullets is the elliptical ogive. This is a curve very similar to the spitzer ogive, except that the circular arc is replaced by an ellipse defined in such a way that it meets the axis at exactly 90°. This gives a somewhat rounded nose regardless of the sharpness ratio. An elliptical ogive is normally described in terms of the ratio of the length of the ogive to the diameter of the shank. A ratio of one half would be, once again, a hemisphere. Values close to 1 are common in practice. Elliptical ogives are mainly used in pistol bullets. The ellipse and some of its mathematical properties. ... A Browning 9 millimeter Hi-Power Ordnance pistol of the French Navy, 19th century, using a Percussion cap mechanism Derringers were small and easily hidden. ... .357 Magnum cartridges, containing bullets A bullet is a solid projectile propelled by a firearm and is normally made from metal (usually lead). ...

Missiles and aircraft generally have much more complex ogives, such as the von Kármán ogive. Given the problem of the aerodynamic design of the nose cone section of any vehicle meant to travel through a compressible fluid medium (such as a rocket or aircraft), the main problem at hand is the determination of the nose cone geometrical shape. ...

Architecture

This Gothic facade makes frequent use of ogival arches.

In Gothic architecture, ogives are the intersecting transverse ribs of arches that establish the surface of a Gothic vault. An ogive or ogival arch is a pointed, "Gothic" arch, drawn with compasses as outlined above, or with arcs of an ellipse as described. A very narrow, steeply pointed ogive arch is sometimes called a "lancet arch.". Villard de Honnecourt, a 13th century itinerant master-builder of Picardy in the north of France, was the first writer to use the word ogive. The French term's origin is considered obscure by O.E.D.; it might come from the Late Latin obvita, the feminine past participle of obvire, to resist, i.e. the arches resisting the downward thrust of the structure's mass. Image File history File links Download high resolution version (1360x2048, 788 KB) Description: Münster, Historisches Rathaus am Prinzipalmarkt Source: photo taken by Rüdiger Wölk Date: 9. ... Image File history File links Download high resolution version (1360x2048, 788 KB) Description: Münster, Historisches Rathaus am Prinzipalmarkt Source: photo taken by Rüdiger Wölk Date: 9. ... See also Gothic art. ... The Lierne vault of the Liebfrauenkirche, Mühlacker 1482. ... Isometric view of a typical arch An arch is a curved structure capable of spanning a space while supporting significant weight (e. ... Self-portrait (?) of Villard de Honnecourt from The Portfolio of Villard de Honnecourt (about 1230) Villard de Honnecourt was possibly a 13th century itinerant master-builder of Picardy in northern France, whose surviving portfolio of drawings (ca 1230s?) is in the Bibliothèque Nationale, Paris (MS Fr 19093). ... wazzup Categories: | ... The Oxford English Dictionary print set The Oxford English Dictionary (OED) is a dictionary published by the Oxford University Press (OUP), and is generally regarded as the most comprehensive and scholarly dictionary of the English language. ...

In later Gothic styles, an ogival arch is a decorative arch delineating a void with a pointed head, formed of two ogee, or S-shaped curves.

Woodworking

In woodworking, an ogive is a type of curve a piece of wood can be shaped in. See also: ogee Artists can use woodworking to create delicate sculptures. ... Ogee Arch Ogee is a shape consisting of a concave arc flowing into a convex arc, so forming an S-shaped curve with vertical ends. ...

Statistics

In statistics, an ogive is the curve of a cumulative distribution function (which, for the normal distribution, resembles one side of an Arabesque or ogival arch). Template:Otherusescccc A graph of a bell curve in a normal distribution showing statistics used in educational assessment, comparing various grading methods. ... In probability theory, the cumulative distribution function (abbreviated cdf) completely describes the probability distribution of a real-valued random variable, X. For every real number x, the cdf is given by where the right-hand side represents the probability that the random variable X takes on a value less than... The normal distribution, also called Gaussian distribution (named after Carl Friedrich Gauss, a German mathematician, although Gauss was not the first to work with it), is a probability distribution of great importance in many fields. ...

Geology

In glaciology, ogives are three dimensional wave-bulges are characteristic of glaciers that have experienced extreme underlying topographical change, observed as an ice fall. Forbes bands are light and dark bands that appear down glacier of ogives, resulting from different ice densities due to the seasons. Lateral moraine on a glacier joining the Gorner Glacier, Zermatt, Switzerland. ...

See also

• Ogee